./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:28:40,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:28:40,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:28:40,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:28:40,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:28:40,642 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:28:40,645 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:28:40,649 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:28:40,652 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:28:40,660 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:28:40,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:28:40,663 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:28:40,664 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:28:40,667 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:28:40,670 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:28:40,676 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:28:40,678 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:28:40,679 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:28:40,681 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:28:40,690 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:28:40,692 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:28:40,693 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:28:40,694 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:28:40,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:28:40,699 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:28:40,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:28:40,700 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:28:40,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:28:40,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:28:40,703 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:28:40,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:28:40,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:28:40,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:28:40,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:28:40,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:28:40,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:28:40,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:28:40,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:28:40,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:28:40,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:28:40,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:28:40,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-13 01:28:40,738 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:28:40,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:28:40,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:28:40,740 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:28:40,740 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:28:40,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:28:40,741 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:28:40,741 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:28:40,741 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:28:40,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:28:40,742 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:28:40,742 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:28:40,742 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:28:40,742 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:28:40,743 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:28:40,743 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:28:40,744 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:28:40,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:28:40,744 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:28:40,744 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:28:40,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:28:40,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:28:40,745 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:28:40,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:28:40,746 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:28:40,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:28:40,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:28:40,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:28:40,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:28:40,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:28:40,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:28:40,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:28:40,748 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:28:40,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:28:40,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:28:40,748 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:28:40,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:28:40,749 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 [2021-11-13 01:28:40,990 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:28:41,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:28:41,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:28:41,015 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:28:41,016 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:28:41,018 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2021-11-13 01:28:41,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/d1b9a4a55/9a81c23ea5ee46bf84cad8bfb75885bb/FLAG0e02253be [2021-11-13 01:28:41,993 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:28:41,997 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2021-11-13 01:28:42,045 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/d1b9a4a55/9a81c23ea5ee46bf84cad8bfb75885bb/FLAG0e02253be [2021-11-13 01:28:42,427 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/d1b9a4a55/9a81c23ea5ee46bf84cad8bfb75885bb [2021-11-13 01:28:42,430 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:28:42,431 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:28:42,433 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:28:42,433 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:28:42,437 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:28:42,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:28:42" (1/1) ... [2021-11-13 01:28:42,439 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c63eee2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:42, skipping insertion in model container [2021-11-13 01:28:42,440 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:28:42" (1/1) ... [2021-11-13 01:28:42,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:28:42,584 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:28:42,947 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2021-11-13 01:28:42,955 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2021-11-13 01:28:42,986 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:28:42,993 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:28:44,124 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,125 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,126 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,128 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,143 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,150 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,152 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,153 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:44,752 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:28:44,753 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:28:44,755 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:28:44,756 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:28:44,778 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:28:44,779 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:28:44,786 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:28:44,787 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:28:44,788 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:28:44,789 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:28:45,028 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:28:45,395 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,396 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,420 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,421 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,434 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,435 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,465 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,473 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,474 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,475 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,477 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,482 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:45,528 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:28:45,586 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-13 01:28:45,587 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1ceabe64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:45, skipping insertion in model container [2021-11-13 01:28:45,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:28:45,587 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-13 01:28:45,591 INFO L158 Benchmark]: Toolchain (without parser) took 3157.14ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 65.6MB in the beginning and 78.9MB in the end (delta: -13.3MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-11-13 01:28:45,591 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 01:28:45,594 INFO L158 Benchmark]: CACSL2BoogieTranslator took 3154.45ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 65.2MB in the beginning and 78.9MB in the end (delta: -13.7MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. [2021-11-13 01:28:45,596 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 92.3MB. Free memory was 62.0MB in the beginning and 61.9MB in the end (delta: 24.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 3154.45ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 65.2MB in the beginning and 78.9MB in the end (delta: -13.7MB). Peak memory consumption was 49.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 7051]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:28:48,020 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:28:48,023 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:28:48,076 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:28:48,076 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:28:48,082 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:28:48,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:28:48,091 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:28:48,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:28:48,105 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:28:48,107 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:28:48,109 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:28:48,110 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:28:48,113 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:28:48,116 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:28:48,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:28:48,121 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:28:48,123 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:28:48,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:28:48,130 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:28:48,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:28:48,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:28:48,135 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:28:48,136 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:28:48,140 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:28:48,140 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:28:48,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:28:48,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:28:48,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:28:48,143 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:28:48,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:28:48,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:28:48,146 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:28:48,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:28:48,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:28:48,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:28:48,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:28:48,149 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:28:48,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:28:48,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:28:48,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:28:48,152 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2021-11-13 01:28:48,205 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:28:48,205 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:28:48,206 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:28:48,206 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:28:48,206 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:28:48,207 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:28:48,207 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:28:48,207 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:28:48,207 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:28:48,207 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:28:48,208 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:28:48,208 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:28:48,209 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:28:48,209 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:28:48,209 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:28:48,209 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:28:48,209 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-13 01:28:48,210 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-13 01:28:48,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:28:48,210 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:28:48,210 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:28:48,210 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:28:48,210 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 01:28:48,211 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:28:48,211 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:28:48,211 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:28:48,211 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:28:48,211 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:28:48,211 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-13 01:28:48,211 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-13 01:28:48,212 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:28:48,212 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:28:48,212 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:28:48,212 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a871e941a14cf19147765419aa3746af2f9add859ed1f61f31f704f97208fdb0 [2021-11-13 01:28:48,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:28:48,633 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:28:48,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:28:48,637 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:28:48,638 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:28:48,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2021-11-13 01:28:48,710 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/126f3959b/009e270ce90d41bf9db70007b00ad7a2/FLAG5210fd288 [2021-11-13 01:28:49,787 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:28:49,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i [2021-11-13 01:28:49,849 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/126f3959b/009e270ce90d41bf9db70007b00ad7a2/FLAG5210fd288 [2021-11-13 01:28:50,149 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/data/126f3959b/009e270ce90d41bf9db70007b00ad7a2 [2021-11-13 01:28:50,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:28:50,152 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:28:50,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:28:50,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:28:50,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:28:50,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:28:50" (1/1) ... [2021-11-13 01:28:50,161 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b333db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:50, skipping insertion in model container [2021-11-13 01:28:50,161 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:28:50" (1/1) ... [2021-11-13 01:28:50,169 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:28:50,305 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:28:50,635 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2021-11-13 01:28:50,642 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2021-11-13 01:28:50,677 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:28:50,684 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:28:51,777 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,778 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,779 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,780 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,781 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,813 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,814 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,819 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,821 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:51,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:52,360 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:28:52,362 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:28:52,363 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:28:52,364 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:28:52,366 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:28:52,367 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:28:52,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:28:52,368 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:28:52,369 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:28:52,370 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:28:52,607 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:28:53,101 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,102 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,136 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,137 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,147 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,148 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,180 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:28:53,303 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-13 01:28:53,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:28:53,394 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2021-11-13 01:28:53,394 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2021-11-13 01:28:53,400 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:28:53,401 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:28:53,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,442 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,443 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,444 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,465 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,466 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,467 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,468 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,469 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,470 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,470 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,505 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:28:53,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:28:53,506 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:28:53,507 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:28:53,508 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:28:53,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:28:53,509 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:28:53,510 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:28:53,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:28:53,511 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:28:53,533 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:28:53,659 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,659 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,668 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,669 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,672 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,673 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,682 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,683 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,684 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,685 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,686 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:28:53,734 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:28:53,748 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4495,4508] [2021-11-13 01:28:53,749 WARN L228 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_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/sv-benchmarks/c/aws-c-common/aws_hash_table_create_harness.i[4555,4568] [2021-11-13 01:28:53,750 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-13 01:28:53,751 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-13 01:28:53,828 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,829 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,829 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,830 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,831 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,840 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,841 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,843 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:53,876 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-13 01:28:53,878 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-13 01:28:53,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-13 01:28:53,879 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-13 01:28:53,880 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-13 01:28:53,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-13 01:28:53,881 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-13 01:28:53,882 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-13 01:28:53,883 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-13 01:28:53,884 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-13 01:28:53,905 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-13 01:28:54,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,039 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,052 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,053 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,056 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,056 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,068 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,069 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-13 01:28:54,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:28:54,516 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:28:54,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54 WrapperNode [2021-11-13 01:28:54,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:28:54,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:28:54,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:28:54,519 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:28:54,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:54,659 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:54,807 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:28:54,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:28:54,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:28:54,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:28:54,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:54,817 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:54,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:54,850 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:54,947 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:54,969 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:55,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:55,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:28:55,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:28:55,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:28:55,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:28:55,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (1/1) ... [2021-11-13 01:28:55,039 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:28:55,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:28:55,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:28:55,099 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:28:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~intFLOATTYPE8 [2021-11-13 01:28:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-13 01:28:55,137 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-13 01:28:55,137 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-13 01:28:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-13 01:28:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-13 01:28:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-13 01:28:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_create [2021-11-13 01:28:55,138 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_create [2021-11-13 01:28:55,138 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-11-13 01:28:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-11-13 01:28:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 01:28:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 01:28:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure s_emplace_item [2021-11-13 01:28:55,139 INFO L138 BoogieDeclarations]: Found implementation of procedure s_emplace_item [2021-11-13 01:28:55,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:28:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:28:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-13 01:28:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-13 01:28:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-13 01:28:55,140 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-13 01:28:55,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 01:28:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-13 01:28:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2021-11-13 01:28:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2021-11-13 01:28:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:28:55,141 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-11-13 01:28:55,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-11-13 01:28:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-13 01:28:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 01:28:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-11-13 01:28:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-11-13 01:28:55,142 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_for [2021-11-13 01:28:55,142 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_for [2021-11-13 01:28:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-11-13 01:28:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-11-13 01:28:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-11-13 01:28:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2021-11-13 01:28:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2021-11-13 01:28:55,143 INFO L130 BoogieDeclarations]: Found specification of procedure s_hash_keys_eq [2021-11-13 01:28:55,143 INFO L138 BoogieDeclarations]: Found implementation of procedure s_hash_keys_eq [2021-11-13 01:28:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_equals [2021-11-13 01:28:55,144 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_equals [2021-11-13 01:28:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 01:28:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-13 01:28:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-11-13 01:28:55,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-11-13 01:28:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-11-13 01:28:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-11-13 01:28:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2021-11-13 01:28:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2021-11-13 01:28:55,145 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-11-13 01:28:55,145 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-11-13 01:28:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_uninterpreted_hasher [2021-11-13 01:28:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_uninterpreted_hasher [2021-11-13 01:28:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure s_safe_eq_check [2021-11-13 01:28:55,146 INFO L138 BoogieDeclarations]: Found implementation of procedure s_safe_eq_check [2021-11-13 01:28:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-11-13 01:28:55,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-13 01:28:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure s_find_entry [2021-11-13 01:28:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure s_find_entry [2021-11-13 01:28:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intFLOATTYPE8 [2021-11-13 01:28:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 01:28:55,147 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 01:28:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-11-13 01:28:55,147 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-13 01:28:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-11-13 01:28:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-11-13 01:28:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 01:28:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-13 01:28:55,148 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-13 01:28:55,148 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-13 01:28:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-13 01:28:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-11-13 01:28:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-11-13 01:28:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intFLOATTYPE8 [2021-11-13 01:28:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2021-11-13 01:28:55,149 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2021-11-13 01:28:55,149 INFO L130 BoogieDeclarations]: Found specification of procedure uninterpreted_equals [2021-11-13 01:28:55,150 INFO L138 BoogieDeclarations]: Found implementation of procedure uninterpreted_equals [2021-11-13 01:28:58,953 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume !true; [2021-11-13 01:29:02,310 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !true; [2021-11-13 01:29:09,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume !true; [2021-11-13 01:29:09,732 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##29: assume !true; [2021-11-13 01:29:23,910 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:29:23,910 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-11-13 01:29:23,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:23 BoogieIcfgContainer [2021-11-13 01:29:23,913 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:29:23,915 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:29:23,915 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:29:23,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:29:23,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:28:50" (1/3) ... [2021-11-13 01:29:23,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9296b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:23, skipping insertion in model container [2021-11-13 01:29:23,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:28:54" (2/3) ... [2021-11-13 01:29:23,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9296b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:29:23, skipping insertion in model container [2021-11-13 01:29:23,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:29:23" (3/3) ... [2021-11-13 01:29:23,922 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_create_harness.i [2021-11-13 01:29:23,927 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:29:23,927 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 01:29:23,985 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:29:23,991 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:29:23,992 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 01:29:24,019 INFO L276 IsEmpty]: Start isEmpty. Operand has 329 states, 219 states have (on average 1.2876712328767124) internal successors, (282), 216 states have internal predecessors, (282), 83 states have call successors, (83), 29 states have call predecessors, (83), 29 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) [2021-11-13 01:29:24,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-13 01:29:24,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:24,033 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:24,033 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:24,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:24,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1112800528, now seen corresponding path program 1 times [2021-11-13 01:29:24,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:24,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [286959466] [2021-11-13 01:29:24,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:24,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:24,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:24,070 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:24,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-13 01:29:28,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:28,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 1767 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:29:28,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-11-13 01:29:29,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:29,967 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-13 01:29:29,968 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:29,968 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [286959466] [2021-11-13 01:29:29,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [286959466] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:29,969 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:29,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:29:29,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158472442] [2021-11-13 01:29:29,972 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:29,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:29:29,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:30,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:29:30,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:29:30,026 INFO L87 Difference]: Start difference. First operand has 329 states, 219 states have (on average 1.2876712328767124) internal successors, (282), 216 states have internal predecessors, (282), 83 states have call successors, (83), 29 states have call predecessors, (83), 29 states have return successors, (83), 83 states have call predecessors, (83), 83 states have call successors, (83) Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 01:29:30,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:30,248 INFO L93 Difference]: Finished difference Result 656 states and 944 transitions. [2021-11-13 01:29:30,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:29:30,251 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) Word has length 122 [2021-11-13 01:29:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:30,275 INFO L225 Difference]: With dead ends: 656 [2021-11-13 01:29:30,275 INFO L226 Difference]: Without dead ends: 325 [2021-11-13 01:29:30,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:29:30,287 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 2 mSDsluCounter, 1301 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.24ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.68ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:30,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1736 Invalid, 11 Unknown, 0 Unchecked, 25.24ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 62.68ms Time] [2021-11-13 01:29:30,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-11-13 01:29:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 325. [2021-11-13 01:29:30,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 211 states have (on average 1.2654028436018958) internal successors, (267), 213 states have internal predecessors, (267), 83 states have call successors, (83), 29 states have call predecessors, (83), 30 states have return successors, (85), 82 states have call predecessors, (85), 81 states have call successors, (85) [2021-11-13 01:29:30,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 435 transitions. [2021-11-13 01:29:30,396 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 435 transitions. Word has length 122 [2021-11-13 01:29:30,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:30,396 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 435 transitions. [2021-11-13 01:29:30,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (34), 2 states have call predecessors, (34), 3 states have return successors, (31), 3 states have call predecessors, (31), 2 states have call successors, (31) [2021-11-13 01:29:30,397 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 435 transitions. [2021-11-13 01:29:30,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-13 01:29:30,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:30,408 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:30,465 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:30,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:30,633 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:30,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:30,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1707785168, now seen corresponding path program 1 times [2021-11-13 01:29:30,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:30,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826314151] [2021-11-13 01:29:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:30,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:30,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:30,642 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:30,660 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-13 01:29:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:34,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 1774 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:29:34,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:35,587 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-11-13 01:29:35,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:36,301 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2021-11-13 01:29:36,301 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:36,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826314151] [2021-11-13 01:29:36,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826314151] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:29:36,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:29:36,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2021-11-13 01:29:36,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567275077] [2021-11-13 01:29:36,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:36,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:29:36,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:36,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:29:36,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:29:36,305 INFO L87 Difference]: Start difference. First operand 325 states and 435 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:29:36,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:36,984 INFO L93 Difference]: Finished difference Result 643 states and 859 transitions. [2021-11-13 01:29:36,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:29:36,985 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 128 [2021-11-13 01:29:36,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:36,991 INFO L225 Difference]: With dead ends: 643 [2021-11-13 01:29:36,991 INFO L226 Difference]: Without dead ends: 327 [2021-11-13 01:29:36,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 247 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:29:36,994 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 2 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 543.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.16ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 584.97ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:36,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1986 Invalid, 148 Unknown, 0 Unchecked, 13.16ms Time], IncrementalHoareTripleChecker [1 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 584.97ms Time] [2021-11-13 01:29:36,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-11-13 01:29:37,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 327. [2021-11-13 01:29:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 327 states, 212 states have (on average 1.2641509433962264) internal successors, (268), 215 states have internal predecessors, (268), 83 states have call successors, (83), 29 states have call predecessors, (83), 31 states have return successors, (86), 82 states have call predecessors, (86), 81 states have call successors, (86) [2021-11-13 01:29:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 327 states to 327 states and 437 transitions. [2021-11-13 01:29:37,026 INFO L78 Accepts]: Start accepts. Automaton has 327 states and 437 transitions. Word has length 128 [2021-11-13 01:29:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:37,027 INFO L470 AbstractCegarLoop]: Abstraction has 327 states and 437 transitions. [2021-11-13 01:29:37,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2021-11-13 01:29:37,028 INFO L276 IsEmpty]: Start isEmpty. Operand 327 states and 437 transitions. [2021-11-13 01:29:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-13 01:29:37,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:37,030 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:37,091 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:37,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:37,257 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:37,257 INFO L85 PathProgramCache]: Analyzing trace with hash -849563629, now seen corresponding path program 1 times [2021-11-13 01:29:37,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:37,261 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857131684] [2021-11-13 01:29:37,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:37,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:37,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:37,262 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:37,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-13 01:29:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:41,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 1821 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:29:41,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:42,128 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-13 01:29:42,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:42,808 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-13 01:29:42,809 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:42,809 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857131684] [2021-11-13 01:29:42,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857131684] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:42,809 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:42,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:29:42,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390577376] [2021-11-13 01:29:42,810 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:42,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:29:42,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:42,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:29:42,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:29:42,812 INFO L87 Difference]: Start difference. First operand 327 states and 437 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 01:29:44,991 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:29:45,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:29:45,154 INFO L93 Difference]: Finished difference Result 641 states and 856 transitions. [2021-11-13 01:29:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:29:45,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 133 [2021-11-13 01:29:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:29:45,163 INFO L225 Difference]: With dead ends: 641 [2021-11-13 01:29:45,163 INFO L226 Difference]: Without dead ends: 334 [2021-11-13 01:29:45,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 261 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:29:45,169 INFO L933 BasicCegarLoop]: 424 mSDtfsCounter, 16 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2239.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.44ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2314.17ms IncrementalHoareTripleChecker+Time [2021-11-13 01:29:45,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 1236 Invalid, 23 Unknown, 0 Unchecked, 4.44ms Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 1 Unknown, 0 Unchecked, 2314.17ms Time] [2021-11-13 01:29:45,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-13 01:29:45,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 334. [2021-11-13 01:29:45,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 217 states have (on average 1.262672811059908) internal successors, (274), 221 states have internal predecessors, (274), 84 states have call successors, (84), 29 states have call predecessors, (84), 32 states have return successors, (88), 83 states have call predecessors, (88), 82 states have call successors, (88) [2021-11-13 01:29:45,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 446 transitions. [2021-11-13 01:29:45,211 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 446 transitions. Word has length 133 [2021-11-13 01:29:45,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:29:45,213 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 446 transitions. [2021-11-13 01:29:45,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-11-13 01:29:45,214 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 446 transitions. [2021-11-13 01:29:45,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-13 01:29:45,220 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:29:45,221 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:29:45,281 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-13 01:29:45,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:29:45,445 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:29:45,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:29:45,445 INFO L85 PathProgramCache]: Analyzing trace with hash 836616209, now seen corresponding path program 1 times [2021-11-13 01:29:45,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:29:45,449 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2102073765] [2021-11-13 01:29:45,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:29:45,449 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:29:45,449 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:29:45,450 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:29:45,451 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-13 01:29:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:29:49,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1824 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:29:49,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:29:50,085 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 01:29:51,296 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-13 01:29:51,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:29:52,351 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 01:29:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-11-13 01:29:52,789 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:29:52,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2102073765] [2021-11-13 01:29:52,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2102073765] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:29:52,789 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:29:52,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 10] imperfect sequences [] total 15 [2021-11-13 01:29:52,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127619202] [2021-11-13 01:29:52,790 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:29:52,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:29:52,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:29:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:29:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:29:52,792 INFO L87 Difference]: Start difference. First operand 334 states and 446 transitions. Second operand has 15 states, 15 states have (on average 5.2) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-13 01:29:55,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:29:57,044 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:29:59,049 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:04,359 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:07,284 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:09,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:11,336 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:13,411 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:15,417 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:19,513 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:21,516 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:23,519 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, RoundingMode, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:25,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:27,375 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:29,395 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:31,767 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:33,783 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:35,800 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:35,801 INFO L93 Difference]: Finished difference Result 666 states and 884 transitions. [2021-11-13 01:30:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:30:35,834 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) Word has length 133 [2021-11-13 01:30:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:35,838 INFO L225 Difference]: With dead ends: 666 [2021-11-13 01:30:35,838 INFO L226 Difference]: Without dead ends: 344 [2021-11-13 01:30:35,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-11-13 01:30:35,840 INFO L933 BasicCegarLoop]: 423 mSDtfsCounter, 41 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 2 mSolverCounterUnsat, 16 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42119.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 3134 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 16 IncrementalHoareTripleChecker+Unknown, 71 IncrementalHoareTripleChecker+Unchecked, 42849.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:35,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 3134 Invalid, 308 Unknown, 0 Unchecked, 10.81ms Time], IncrementalHoareTripleChecker [2 Valid, 219 Invalid, 16 Unknown, 71 Unchecked, 42849.34ms Time] [2021-11-13 01:30:35,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2021-11-13 01:30:35,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 338. [2021-11-13 01:30:35,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 221 states have (on average 1.257918552036199) internal successors, (278), 224 states have internal predecessors, (278), 84 states have call successors, (84), 30 states have call predecessors, (84), 32 states have return successors, (88), 83 states have call predecessors, (88), 82 states have call successors, (88) [2021-11-13 01:30:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 450 transitions. [2021-11-13 01:30:35,867 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 450 transitions. Word has length 133 [2021-11-13 01:30:35,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:35,868 INFO L470 AbstractCegarLoop]: Abstraction has 338 states and 450 transitions. [2021-11-13 01:30:35,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.2) internal successors, (78), 13 states have internal predecessors, (78), 4 states have call successors, (33), 3 states have call predecessors, (33), 5 states have return successors, (30), 4 states have call predecessors, (30), 4 states have call successors, (30) [2021-11-13 01:30:35,868 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 450 transitions. [2021-11-13 01:30:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 01:30:35,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:35,871 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:35,919 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:36,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:36,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:36,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1665938398, now seen corresponding path program 1 times [2021-11-13 01:30:36,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:36,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625400181] [2021-11-13 01:30:36,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:36,089 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:36,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:36,090 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:36,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-13 01:30:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:40,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1838 conjuncts, 16 conjunts are in the unsatisfiable core [2021-11-13 01:30:40,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:40,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-13 01:30:42,119 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-11-13 01:30:42,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:43,474 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2021-11-13 01:30:43,882 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2021-11-13 01:30:43,882 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:43,882 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625400181] [2021-11-13 01:30:43,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625400181] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 01:30:43,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 01:30:43,882 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [11] total 17 [2021-11-13 01:30:43,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564717708] [2021-11-13 01:30:43,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:43,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:30:43,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:43,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:30:43,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:30:43,884 INFO L87 Difference]: Start difference. First operand 338 states and 450 transitions. Second operand has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-13 01:30:46,587 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, FloatingPoint, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:30:46,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:46,754 INFO L93 Difference]: Finished difference Result 661 states and 879 transitions. [2021-11-13 01:30:46,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:30:46,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 139 [2021-11-13 01:30:46,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:46,762 INFO L225 Difference]: With dead ends: 661 [2021-11-13 01:30:46,762 INFO L226 Difference]: Without dead ends: 341 [2021-11-13 01:30:46,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:30:46,764 INFO L933 BasicCegarLoop]: 420 mSDtfsCounter, 16 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2624.01ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.47ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 65 IncrementalHoareTripleChecker+Unchecked, 2716.65ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:46,765 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 2043 Invalid, 100 Unknown, 0 Unchecked, 4.47ms Time], IncrementalHoareTripleChecker [2 Valid, 32 Invalid, 1 Unknown, 65 Unchecked, 2716.65ms Time] [2021-11-13 01:30:46,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-11-13 01:30:46,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 341. [2021-11-13 01:30:46,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 341 states, 223 states have (on average 1.2556053811659194) internal successors, (280), 226 states have internal predecessors, (280), 85 states have call successors, (85), 31 states have call predecessors, (85), 32 states have return successors, (89), 83 states have call predecessors, (89), 83 states have call successors, (89) [2021-11-13 01:30:46,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 454 transitions. [2021-11-13 01:30:46,812 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 454 transitions. Word has length 139 [2021-11-13 01:30:46,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:46,812 INFO L470 AbstractCegarLoop]: Abstraction has 341 states and 454 transitions. [2021-11-13 01:30:46,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.454545454545454) internal successors, (71), 10 states have internal predecessors, (71), 5 states have call successors, (25), 3 states have call predecessors, (25), 5 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-13 01:30:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 454 transitions. [2021-11-13 01:30:46,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 01:30:46,817 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:46,818 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:46,866 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:47,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:47,032 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:47,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:47,033 INFO L85 PathProgramCache]: Analyzing trace with hash -2025283159, now seen corresponding path program 1 times [2021-11-13 01:30:47,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:47,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [46950220] [2021-11-13 01:30:47,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:47,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:47,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:47,038 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:47,039 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-13 01:30:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:51,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1855 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:30:51,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:51,716 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-13 01:30:51,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-11-13 01:30:52,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:52,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [46950220] [2021-11-13 01:30:52,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [46950220] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:52,244 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:52,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 7 [2021-11-13 01:30:52,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610035513] [2021-11-13 01:30:52,244 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:52,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:30:52,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:30:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:30:52,246 INFO L87 Difference]: Start difference. First operand 341 states and 454 transitions. Second operand has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 01:30:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:52,913 INFO L93 Difference]: Finished difference Result 633 states and 849 transitions. [2021-11-13 01:30:52,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:30:52,914 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 144 [2021-11-13 01:30:52,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:52,918 INFO L225 Difference]: With dead ends: 633 [2021-11-13 01:30:52,918 INFO L226 Difference]: Without dead ends: 343 [2021-11-13 01:30:52,920 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:52,921 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 2 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 556.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.40ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 606.60ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:52,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1997 Invalid, 146 Unknown, 0 Unchecked, 5.40ms Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 606.60ms Time] [2021-11-13 01:30:52,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2021-11-13 01:30:52,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2021-11-13 01:30:52,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 224 states have (on average 1.2544642857142858) internal successors, (281), 228 states have internal predecessors, (281), 85 states have call successors, (85), 31 states have call predecessors, (85), 33 states have return successors, (96), 83 states have call predecessors, (96), 83 states have call successors, (96) [2021-11-13 01:30:52,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 462 transitions. [2021-11-13 01:30:52,942 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 462 transitions. Word has length 144 [2021-11-13 01:30:52,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:52,943 INFO L470 AbstractCegarLoop]: Abstraction has 343 states and 462 transitions. [2021-11-13 01:30:52,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (26), 2 states have call predecessors, (26), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-13 01:30:52,944 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 462 transitions. [2021-11-13 01:30:52,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-13 01:30:52,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:52,946 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:52,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:53,168 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:53,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:53,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1249483724, now seen corresponding path program 1 times [2021-11-13 01:30:53,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:53,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699983226] [2021-11-13 01:30:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:53,173 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:53,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:53,178 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:53,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-13 01:30:57,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:30:57,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 1872 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 01:30:57,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:30:57,883 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-13 01:30:57,883 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:30:58,273 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-13 01:30:58,273 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:30:58,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699983226] [2021-11-13 01:30:58,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699983226] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:30:58,273 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:30:58,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-13 01:30:58,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881409454] [2021-11-13 01:30:58,274 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:30:58,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:30:58,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:30:58,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:30:58,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:30:58,277 INFO L87 Difference]: Start difference. First operand 343 states and 462 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-13 01:30:58,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:30:58,431 INFO L93 Difference]: Finished difference Result 351 states and 469 transitions. [2021-11-13 01:30:58,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:30:58,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) Word has length 149 [2021-11-13 01:30:58,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:30:58,435 INFO L225 Difference]: With dead ends: 351 [2021-11-13 01:30:58,435 INFO L226 Difference]: Without dead ends: 349 [2021-11-13 01:30:58,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:30:58,437 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 18 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 83.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.47ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 102.87ms IncrementalHoareTripleChecker+Time [2021-11-13 01:30:58,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 1686 Invalid, 23 Unknown, 0 Unchecked, 3.47ms Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 102.87ms Time] [2021-11-13 01:30:58,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-11-13 01:30:58,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 347. [2021-11-13 01:30:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 227 states have (on average 1.251101321585903) internal successors, (284), 231 states have internal predecessors, (284), 85 states have call successors, (85), 32 states have call predecessors, (85), 34 states have return successors, (96), 83 states have call predecessors, (96), 83 states have call successors, (96) [2021-11-13 01:30:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 465 transitions. [2021-11-13 01:30:58,456 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 465 transitions. Word has length 149 [2021-11-13 01:30:58,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:30:58,457 INFO L470 AbstractCegarLoop]: Abstraction has 347 states and 465 transitions. [2021-11-13 01:30:58,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (27), 3 states have call predecessors, (27), 1 states have return successors, (23), 1 states have call predecessors, (23), 1 states have call successors, (23) [2021-11-13 01:30:58,458 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 465 transitions. [2021-11-13 01:30:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-13 01:30:58,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:30:58,461 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:30:58,522 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-13 01:30:58,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:30:58,677 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:30:58,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:30:58,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1535358165, now seen corresponding path program 1 times [2021-11-13 01:30:58,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:30:58,683 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [165231055] [2021-11-13 01:30:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:30:58,684 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:30:58,684 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:30:58,685 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:30:58,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-13 01:31:02,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:03,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 1893 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:03,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:03,382 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-13 01:31:03,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:03,772 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-13 01:31:03,772 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:03,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [165231055] [2021-11-13 01:31:03,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [165231055] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:03,772 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:03,772 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 01:31:03,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778717189] [2021-11-13 01:31:03,773 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:03,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:31:03,773 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:03,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:31:03,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:31:03,774 INFO L87 Difference]: Start difference. First operand 347 states and 465 transitions. Second operand has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-13 01:31:04,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:04,051 INFO L93 Difference]: Finished difference Result 359 states and 477 transitions. [2021-11-13 01:31:04,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 01:31:04,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) Word has length 162 [2021-11-13 01:31:04,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:04,057 INFO L225 Difference]: With dead ends: 359 [2021-11-13 01:31:04,057 INFO L226 Difference]: Without dead ends: 357 [2021-11-13 01:31:04,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-13 01:31:04,058 INFO L933 BasicCegarLoop]: 431 mSDtfsCounter, 13 mSDsluCounter, 1697 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 202.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 215.24ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:04,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 2128 Invalid, 45 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [4 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 215.24ms Time] [2021-11-13 01:31:04,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357 states. [2021-11-13 01:31:04,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357 to 351. [2021-11-13 01:31:04,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 230 states have (on average 1.2478260869565216) internal successors, (287), 234 states have internal predecessors, (287), 85 states have call successors, (85), 33 states have call predecessors, (85), 35 states have return successors, (96), 83 states have call predecessors, (96), 83 states have call successors, (96) [2021-11-13 01:31:04,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 468 transitions. [2021-11-13 01:31:04,078 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 468 transitions. Word has length 162 [2021-11-13 01:31:04,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:04,079 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 468 transitions. [2021-11-13 01:31:04,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (29), 3 states have call predecessors, (29), 1 states have return successors, (25), 1 states have call predecessors, (25), 1 states have call successors, (25) [2021-11-13 01:31:04,080 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 468 transitions. [2021-11-13 01:31:04,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-13 01:31:04,082 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:04,083 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:04,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:04,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:04,297 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:04,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:04,297 INFO L85 PathProgramCache]: Analyzing trace with hash 517688028, now seen corresponding path program 1 times [2021-11-13 01:31:04,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:04,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552080624] [2021-11-13 01:31:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:04,303 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:04,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:04,304 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:04,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-13 01:31:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:08,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-13 01:31:08,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:10,342 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-11-13 01:31:10,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:12,733 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2021-11-13 01:31:12,733 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:12,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552080624] [2021-11-13 01:31:12,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552080624] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:12,733 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2100852247] [2021-11-13 01:31:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:12,734 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:12,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:12,736 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:12,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-11-13 01:31:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:14,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 2013 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 01:31:14,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:15,241 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-13 01:31:15,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-13 01:31:15,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2100852247] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:15,928 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-13 01:31:15,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [13, 14] total 21 [2021-11-13 01:31:15,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102103546] [2021-11-13 01:31:15,928 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:15,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:31:15,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:15,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:31:15,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:31:15,930 INFO L87 Difference]: Start difference. First operand 351 states and 468 transitions. Second operand has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 01:31:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:16,757 INFO L93 Difference]: Finished difference Result 621 states and 832 transitions. [2021-11-13 01:31:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:31:16,758 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) Word has length 178 [2021-11-13 01:31:16,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:16,762 INFO L225 Difference]: With dead ends: 621 [2021-11-13 01:31:16,768 INFO L226 Difference]: Without dead ends: 351 [2021-11-13 01:31:16,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=52, Invalid=410, Unknown=0, NotChecked=0, Total=462 [2021-11-13 01:31:16,771 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 2 mSDsluCounter, 1588 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 664.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1997 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.14ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 716.66ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:16,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1997 Invalid, 146 Unknown, 0 Unchecked, 5.14ms Time], IncrementalHoareTripleChecker [0 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 716.66ms Time] [2021-11-13 01:31:16,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2021-11-13 01:31:16,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2021-11-13 01:31:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 351 states, 230 states have (on average 1.2478260869565216) internal successors, (287), 234 states have internal predecessors, (287), 85 states have call successors, (85), 33 states have call predecessors, (85), 35 states have return successors, (95), 83 states have call predecessors, (95), 83 states have call successors, (95) [2021-11-13 01:31:16,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 467 transitions. [2021-11-13 01:31:16,794 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 467 transitions. Word has length 178 [2021-11-13 01:31:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:16,797 INFO L470 AbstractCegarLoop]: Abstraction has 351 states and 467 transitions. [2021-11-13 01:31:16,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (26), 3 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-13 01:31:16,798 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 467 transitions. [2021-11-13 01:31:16,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-13 01:31:16,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:16,803 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:16,868 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-11-13 01:31:17,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:17,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:17,217 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:17,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1470890575, now seen corresponding path program 1 times [2021-11-13 01:31:17,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:17,223 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [969815595] [2021-11-13 01:31:17,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:17,223 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:17,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:17,225 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:17,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-13 01:31:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:21,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 01:31:21,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:23,181 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-13 01:31:23,182 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:24,350 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-11-13 01:31:24,350 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:24,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [969815595] [2021-11-13 01:31:24,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [969815595] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:24,351 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:24,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12, 12] imperfect sequences [] total 13 [2021-11-13 01:31:24,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900637506] [2021-11-13 01:31:24,351 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:24,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:31:24,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:24,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:31:24,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:31:24,353 INFO L87 Difference]: Start difference. First operand 351 states and 467 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 10 states have internal predecessors, (83), 7 states have call successors, (33), 5 states have call predecessors, (33), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-13 01:31:27,385 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:31:27,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:27,818 INFO L93 Difference]: Finished difference Result 694 states and 939 transitions. [2021-11-13 01:31:27,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:31:27,820 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 10 states have internal predecessors, (83), 7 states have call successors, (33), 5 states have call predecessors, (33), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) Word has length 183 [2021-11-13 01:31:27,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:27,825 INFO L225 Difference]: With dead ends: 694 [2021-11-13 01:31:27,825 INFO L226 Difference]: Without dead ends: 425 [2021-11-13 01:31:27,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-11-13 01:31:27,828 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 127 mSDsluCounter, 4942 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 14 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2946.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 5400 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.19ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3025.26ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:27,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 5400 Invalid, 192 Unknown, 0 Unchecked, 10.19ms Time], IncrementalHoareTripleChecker [14 Valid, 177 Invalid, 1 Unknown, 0 Unchecked, 3025.26ms Time] [2021-11-13 01:31:27,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2021-11-13 01:31:27,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 395. [2021-11-13 01:31:27,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 395 states, 262 states have (on average 1.2633587786259541) internal successors, (331), 267 states have internal predecessors, (331), 93 states have call successors, (93), 36 states have call predecessors, (93), 39 states have return successors, (105), 91 states have call predecessors, (105), 91 states have call successors, (105) [2021-11-13 01:31:27,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 529 transitions. [2021-11-13 01:31:27,852 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 529 transitions. Word has length 183 [2021-11-13 01:31:27,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:27,853 INFO L470 AbstractCegarLoop]: Abstraction has 395 states and 529 transitions. [2021-11-13 01:31:27,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 10 states have internal predecessors, (83), 7 states have call successors, (33), 5 states have call predecessors, (33), 2 states have return successors, (28), 5 states have call predecessors, (28), 4 states have call successors, (28) [2021-11-13 01:31:27,853 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 529 transitions. [2021-11-13 01:31:27,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-11-13 01:31:27,856 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:27,856 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:27,922 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:28,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:28,081 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:28,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:28,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1712989027, now seen corresponding path program 1 times [2021-11-13 01:31:28,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:28,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1860857063] [2021-11-13 01:31:28,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:28,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:28,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:28,089 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:28,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-13 01:31:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:32,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 1948 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:31:32,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:33,114 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-13 01:31:33,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:33,727 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-13 01:31:33,728 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:33,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1860857063] [2021-11-13 01:31:33,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1860857063] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:33,728 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:33,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2021-11-13 01:31:33,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618517422] [2021-11-13 01:31:33,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:33,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:31:33,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:33,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:31:33,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:31:33,731 INFO L87 Difference]: Start difference. First operand 395 states and 529 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 01:31:33,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:33,986 INFO L93 Difference]: Finished difference Result 512 states and 682 transitions. [2021-11-13 01:31:33,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:31:33,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) Word has length 175 [2021-11-13 01:31:33,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:33,992 INFO L225 Difference]: With dead ends: 512 [2021-11-13 01:31:33,992 INFO L226 Difference]: Without dead ends: 435 [2021-11-13 01:31:33,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:31:33,994 INFO L933 BasicCegarLoop]: 462 mSDtfsCounter, 53 mSDsluCounter, 2214 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 179.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 214.13ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:33,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 2676 Invalid, 29 Unknown, 0 Unchecked, 3.53ms Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 214.13ms Time] [2021-11-13 01:31:33,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2021-11-13 01:31:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 401. [2021-11-13 01:31:34,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 401 states, 266 states have (on average 1.2593984962406015) internal successors, (335), 272 states have internal predecessors, (335), 93 states have call successors, (93), 36 states have call predecessors, (93), 41 states have return successors, (107), 92 states have call predecessors, (107), 91 states have call successors, (107) [2021-11-13 01:31:34,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 401 states to 401 states and 535 transitions. [2021-11-13 01:31:34,017 INFO L78 Accepts]: Start accepts. Automaton has 401 states and 535 transitions. Word has length 175 [2021-11-13 01:31:34,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:34,017 INFO L470 AbstractCegarLoop]: Abstraction has 401 states and 535 transitions. [2021-11-13 01:31:34,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 6 states have internal predecessors, (90), 2 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (29), 4 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 01:31:34,018 INFO L276 IsEmpty]: Start isEmpty. Operand 401 states and 535 transitions. [2021-11-13 01:31:34,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2021-11-13 01:31:34,020 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:34,021 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:34,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:34,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:34,237 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash -2049365007, now seen corresponding path program 1 times [2021-11-13 01:31:34,242 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:34,242 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [657397406] [2021-11-13 01:31:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:34,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:34,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:34,244 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:34,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-13 01:31:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:38,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1952 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 01:31:38,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2021-11-13 01:31:38,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:39,408 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2021-11-13 01:31:39,408 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:39,408 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [657397406] [2021-11-13 01:31:39,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [657397406] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:31:39,408 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:31:39,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-13 01:31:39,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688497015] [2021-11-13 01:31:39,409 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:31:39,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:31:39,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:31:39,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:31:39,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:39,411 INFO L87 Difference]: Start difference. First operand 401 states and 535 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:31:39,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:31:39,453 INFO L93 Difference]: Finished difference Result 641 states and 852 transitions. [2021-11-13 01:31:39,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:31:39,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 177 [2021-11-13 01:31:39,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:31:39,457 INFO L225 Difference]: With dead ends: 641 [2021-11-13 01:31:39,457 INFO L226 Difference]: Without dead ends: 403 [2021-11-13 01:31:39,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 351 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:31:39,459 INFO L933 BasicCegarLoop]: 427 mSDtfsCounter, 0 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 32.91ms IncrementalHoareTripleChecker+Time [2021-11-13 01:31:39,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 849 Invalid, 6 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 32.91ms Time] [2021-11-13 01:31:39,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2021-11-13 01:31:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 403. [2021-11-13 01:31:39,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 268 states have (on average 1.257462686567164) internal successors, (337), 274 states have internal predecessors, (337), 93 states have call successors, (93), 36 states have call predecessors, (93), 41 states have return successors, (107), 92 states have call predecessors, (107), 91 states have call successors, (107) [2021-11-13 01:31:39,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 537 transitions. [2021-11-13 01:31:39,479 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 537 transitions. Word has length 177 [2021-11-13 01:31:39,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:31:39,480 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 537 transitions. [2021-11-13 01:31:39,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-11-13 01:31:39,480 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 537 transitions. [2021-11-13 01:31:39,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2021-11-13 01:31:39,483 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:31:39,483 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:31:39,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-13 01:31:39,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:31:39,705 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:31:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:31:39,705 INFO L85 PathProgramCache]: Analyzing trace with hash -2017418857, now seen corresponding path program 1 times [2021-11-13 01:31:39,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:31:39,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [9302754] [2021-11-13 01:31:39,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:39,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:31:39,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:31:39,710 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:31:39,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-13 01:31:43,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:44,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:31:44,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:44,925 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:44,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:46,118 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-13 01:31:46,118 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:31:46,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [9302754] [2021-11-13 01:31:46,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [9302754] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:46,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [128920289] [2021-11-13 01:31:46,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:46,120 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-13 01:31:46,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-13 01:31:46,121 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-13 01:31:46,123 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Waiting until timeout for monitored process [2021-11-13 01:31:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:55,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-13 01:31:55,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:31:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:31:56,256 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:31:57,256 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 16 proven. 3 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-13 01:31:57,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [128920289] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:31:57,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95668300] [2021-11-13 01:31:57,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:31:57,257 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:31:57,257 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:31:57,258 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 01:31:57,274 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 01:31:58,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:31:58,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 1998 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-13 01:31:58,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:00,133 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-11-13 01:32:00,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:01,917 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 11 proven. 8 refuted. 0 times theorem prover too weak. 212 trivial. 0 not checked. [2021-11-13 01:32:01,917 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95668300] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 01:32:01,917 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-13 01:32:01,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6, 7, 12, 13] total 15 [2021-11-13 01:32:01,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531132900] [2021-11-13 01:32:01,918 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-13 01:32:01,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-13 01:32:01,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:01,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-13 01:32:01,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:32:01,921 INFO L87 Difference]: Start difference. First operand 403 states and 537 transitions. Second operand has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 9 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-13 01:32:05,677 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 01:32:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:06,352 INFO L93 Difference]: Finished difference Result 732 states and 984 transitions. [2021-11-13 01:32:06,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:32:06,357 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 9 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) Word has length 186 [2021-11-13 01:32:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:06,361 INFO L225 Difference]: With dead ends: 732 [2021-11-13 01:32:06,362 INFO L226 Difference]: Without dead ends: 430 [2021-11-13 01:32:06,364 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1119 GetRequests, 1101 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2021-11-13 01:32:06,365 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 134 mSDsluCounter, 3937 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 30 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3751.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 4348 SdHoareTripleChecker+Invalid, 337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.11ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3900.98ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:06,365 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 4348 Invalid, 337 Unknown, 0 Unchecked, 9.11ms Time], IncrementalHoareTripleChecker [30 Valid, 306 Invalid, 1 Unknown, 0 Unchecked, 3900.98ms Time] [2021-11-13 01:32:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2021-11-13 01:32:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 425. [2021-11-13 01:32:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 278 states have (on average 1.2482014388489209) internal successors, (347), 284 states have internal predecessors, (347), 103 states have call successors, (103), 38 states have call predecessors, (103), 43 states have return successors, (115), 102 states have call predecessors, (115), 101 states have call successors, (115) [2021-11-13 01:32:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 565 transitions. [2021-11-13 01:32:06,396 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 565 transitions. Word has length 186 [2021-11-13 01:32:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:06,397 INFO L470 AbstractCegarLoop]: Abstraction has 425 states and 565 transitions. [2021-11-13 01:32:06,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.538461538461538) internal successors, (98), 13 states have internal predecessors, (98), 9 states have call successors, (39), 4 states have call predecessors, (39), 4 states have return successors, (34), 6 states have call predecessors, (34), 6 states have call successors, (34) [2021-11-13 01:32:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 565 transitions. [2021-11-13 01:32:06,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2021-11-13 01:32:06,401 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:06,402 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:06,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (16)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:06,708 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:06,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-11-13 01:32:07,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 01:32:07,017 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:07,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:07,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1823887921, now seen corresponding path program 1 times [2021-11-13 01:32:07,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:07,022 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1669150346] [2021-11-13 01:32:07,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:07,023 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:07,023 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:07,024 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:07,026 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-11-13 01:32:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:12,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2001 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 01:32:12,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 01:32:12,947 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-11-13 01:32:12,947 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 01:32:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2021-11-13 01:32:13,799 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-13 01:32:13,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1669150346] [2021-11-13 01:32:13,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1669150346] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 01:32:13,800 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:32:13,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-13 01:32:13,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945668388] [2021-11-13 01:32:13,800 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 01:32:13,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:32:13,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-13 01:32:13,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:32:13,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:32:13,802 INFO L87 Difference]: Start difference. First operand 425 states and 565 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 01:32:13,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:32:13,976 INFO L93 Difference]: Finished difference Result 504 states and 662 transitions. [2021-11-13 01:32:13,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:32:13,978 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) Word has length 184 [2021-11-13 01:32:13,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:32:13,982 INFO L225 Difference]: With dead ends: 504 [2021-11-13 01:32:13,983 INFO L226 Difference]: Without dead ends: 429 [2021-11-13 01:32:13,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 367 GetRequests, 363 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:32:13,987 INFO L933 BasicCegarLoop]: 426 mSDtfsCounter, 2 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 99.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.75ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 108.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:32:13,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1700 Invalid, 11 Unknown, 0 Unchecked, 2.75ms Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 108.34ms Time] [2021-11-13 01:32:13,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-11-13 01:32:14,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 429. [2021-11-13 01:32:14,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 281 states have (on average 1.2455516014234875) internal successors, (350), 287 states have internal predecessors, (350), 103 states have call successors, (103), 38 states have call predecessors, (103), 44 states have return successors, (117), 103 states have call predecessors, (117), 101 states have call successors, (117) [2021-11-13 01:32:14,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 570 transitions. [2021-11-13 01:32:14,018 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 570 transitions. Word has length 184 [2021-11-13 01:32:14,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:32:14,019 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 570 transitions. [2021-11-13 01:32:14,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 2 states have call successors, (30), 2 states have call predecessors, (30), 3 states have return successors, (29), 3 states have call predecessors, (29), 2 states have call successors, (29) [2021-11-13 01:32:14,020 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 570 transitions. [2021-11-13 01:32:14,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-13 01:32:14,022 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:32:14,023 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:32:14,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2021-11-13 01:32:14,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-13 01:32:14,241 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 01:32:14,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:32:14,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1638730180, now seen corresponding path program 1 times [2021-11-13 01:32:14,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-13 01:32:14,248 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [600770020] [2021-11-13 01:32:14,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:32:14,250 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-13 01:32:14,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat [2021-11-13 01:32:14,251 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-13 01:32:14,258 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f0800d26-dc69-4dfa-9f6a-c099c7b2aa3f/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-13 01:32:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:32:24,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 2015 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-13 01:32:24,181 INFO L286 TraceCheckSpWp]: Computing forward predicates...