./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/config/TaipanReach.xml -i ../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P --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 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-21 01:43:12,013 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-21 01:43:12,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-21 01:43:12,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-21 01:43:12,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-21 01:43:12,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-21 01:43:12,077 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-21 01:43:12,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-21 01:43:12,083 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-21 01:43:12,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-21 01:43:12,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-21 01:43:12,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-21 01:43:12,092 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-21 01:43:12,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-21 01:43:12,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-21 01:43:12,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-21 01:43:12,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-21 01:43:12,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-21 01:43:12,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-21 01:43:12,114 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-21 01:43:12,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-21 01:43:12,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-21 01:43:12,121 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-21 01:43:12,122 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-21 01:43:12,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-21 01:43:12,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-21 01:43:12,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-21 01:43:12,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-21 01:43:12,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-21 01:43:12,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-21 01:43:12,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-21 01:43:12,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-21 01:43:12,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-21 01:43:12,141 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-21 01:43:12,142 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-21 01:43:12,143 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-21 01:43:12,144 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-21 01:43:12,144 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-21 01:43:12,144 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-21 01:43:12,145 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-21 01:43:12,146 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-21 01:43:12,147 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-21 01:43:12,190 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-21 01:43:12,190 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-21 01:43:12,191 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-21 01:43:12,191 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-21 01:43:12,198 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-21 01:43:12,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-21 01:43:12,199 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-21 01:43:12,199 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-21 01:43:12,199 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-21 01:43:12,200 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-21 01:43:12,201 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-21 01:43:12,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-21 01:43:12,201 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-21 01:43:12,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-21 01:43:12,202 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-21 01:43:12,202 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-21 01:43:12,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-21 01:43:12,202 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-21 01:43:12,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-21 01:43:12,203 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-21 01:43:12,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-21 01:43:12,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-21 01:43:12,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-21 01:43:12,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-21 01:43:12,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-21 01:43:12,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-21 01:43:12,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-21 01:43:12,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-21 01:43:12,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-21 01:43:12,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:43:12,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-21 01:43:12,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-21 01:43:12,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-21 01:43:12,209 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-21 01:43:12,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-21 01:43:12,209 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-21 01:43:12,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-21 01:43:12,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-21 01:43:12,210 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_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 723ac1839b12f7ec2d51e01d6b07ab9cd6a1336eb9a801e97d56c2782f32ef5c [2021-11-21 01:43:12,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-21 01:43:12,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-21 01:43:12,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-21 01:43:12,558 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-21 01:43:12,559 INFO L275 PluginConnector]: CDTParser initialized [2021-11-21 01:43:12,561 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/../../sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-21 01:43:12,644 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/data/c8df7c6bd/c289e1b048784c889cd0cd57c27b3248/FLAGf032e93c7 [2021-11-21 01:43:13,418 INFO L306 CDTParser]: Found 1 translation units. [2021-11-21 01:43:13,418 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i [2021-11-21 01:43:13,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/data/c8df7c6bd/c289e1b048784c889cd0cd57c27b3248/FLAGf032e93c7 [2021-11-21 01:43:13,980 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/data/c8df7c6bd/c289e1b048784c889cd0cd57c27b3248 [2021-11-21 01:43:13,982 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-21 01:43:13,983 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-21 01:43:13,986 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-21 01:43:13,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-21 01:43:13,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-21 01:43:13,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:13" (1/1) ... [2021-11-21 01:43:13,992 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@611c26b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:13, skipping insertion in model container [2021-11-21 01:43:13,992 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:43:13" (1/1) ... [2021-11-21 01:43:13,999 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-21 01:43:14,129 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-21 01:43:14,412 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-11-21 01:43:14,419 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-11-21 01:43:15,359 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,360 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,361 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,362 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,363 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,377 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,378 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,381 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,382 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,384 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,385 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,386 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,386 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,764 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:43:15,765 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:43:15,766 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:43:15,767 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:43:15,769 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:43:15,769 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:43:15,770 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:43:15,770 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:43:15,771 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:43:15,772 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:43:15,924 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:43:15,947 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,947 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,953 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:15,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,124 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,125 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,126 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,127 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,128 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,132 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,133 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,134 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,135 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,140 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,141 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,148 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,149 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,155 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,156 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:43:16,240 INFO L203 MainTranslator]: Completed pre-run [2021-11-21 01:43:16,271 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4502,4515] [2021-11-21 01:43:16,272 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/sv-benchmarks/c/aws-c-common/aws_priority_queue_s_sift_up_harness.i[4562,4575] [2021-11-21 01:43:16,304 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,304 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,305 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,306 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,312 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,314 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,315 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,316 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,346 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-21 01:43:16,347 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-21 01:43:16,348 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-21 01:43:16,348 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-21 01:43:16,349 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-21 01:43:16,350 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-21 01:43:16,350 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-21 01:43:16,351 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-21 01:43:16,351 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-21 01:43:16,352 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-21 01:43:16,374 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-21 01:43:16,402 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,405 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,407 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,412 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,455 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,456 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,457 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,459 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,460 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,461 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,489 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,490 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,491 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,491 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,493 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,503 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,504 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,505 WARN L1533 CHandler]: Possible shadowing of function index [2021-11-21 01:43:16,516 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-21 01:43:16,741 INFO L208 MainTranslator]: Completed translation [2021-11-21 01:43:16,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16 WrapperNode [2021-11-21 01:43:16,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-21 01:43:16,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-21 01:43:16,743 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-21 01:43:16,743 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-21 01:43:16,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:16,863 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:16,978 INFO L137 Inliner]: procedures = 697, calls = 1887, calls flagged for inlining = 61, calls inlined = 14, statements flattened = 815 [2021-11-21 01:43:16,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-21 01:43:16,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-21 01:43:16,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-21 01:43:16,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-21 01:43:16,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:16,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:17,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:17,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:17,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:17,092 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:17,106 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:17,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-21 01:43:17,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-21 01:43:17,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-21 01:43:17,138 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-21 01:43:17,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (1/1) ... [2021-11-21 01:43:17,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-21 01:43:17,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:17,169 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-21 01:43:17,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-21 01:43:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure s_swap [2021-11-21 01:43:17,211 INFO L138 BoogieDeclarations]: Found implementation of procedure s_swap [2021-11-21 01:43:17,211 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_mem_zeroed [2021-11-21 01:43:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_mem_zeroed [2021-11-21 01:43:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-21 01:43:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2021-11-21 01:43:17,212 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2021-11-21 01:43:17,212 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2021-11-21 01:43:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2021-11-21 01:43:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-11-21 01:43:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-11-21 01:43:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure s_sift_up [2021-11-21 01:43:17,213 INFO L138 BoogieDeclarations]: Found implementation of procedure s_sift_up [2021-11-21 01:43:17,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-21 01:43:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-11-21 01:43:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-11-21 01:43:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-21 01:43:17,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-21 01:43:17,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-21 01:43:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-21 01:43:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-21 01:43:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure my_abort [2021-11-21 01:43:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure my_abort [2021-11-21 01:43:17,215 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-11-21 01:43:17,215 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-11-21 01:43:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-21 01:43:17,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-21 01:43:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-11-21 01:43:17,216 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-11-21 01:43:17,216 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-11-21 01:43:17,216 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-11-21 01:43:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-11-21 01:43:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-11-21 01:43:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_is_valid [2021-11-21 01:43:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_is_valid [2021-11-21 01:43:17,217 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_length [2021-11-21 01:43:17,217 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_length [2021-11-21 01:43:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-21 01:43:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-21 01:43:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-11-21 01:43:17,218 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-11-21 01:43:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-21 01:43:17,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-21 01:43:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-21 01:43:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_get_at_ptr [2021-11-21 01:43:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_get_at_ptr [2021-11-21 01:43:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-11-21 01:43:17,219 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-11-21 01:43:17,219 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-11-21 01:43:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-11-21 01:43:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-21 01:43:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2021-11-21 01:43:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2021-11-21 01:43:17,220 INFO L130 BoogieDeclarations]: Found specification of procedure aws_priority_queue_backpointer_index_valid [2021-11-21 01:43:17,220 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_priority_queue_backpointer_index_valid [2021-11-21 01:43:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:43:17,221 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-21 01:43:17,221 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-21 01:43:17,595 INFO L236 CfgBuilder]: Building ICFG [2021-11-21 01:43:17,598 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-21 01:43:19,211 INFO L277 CfgBuilder]: Performing block encoding [2021-11-21 01:43:19,453 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-21 01:43:19,453 INFO L301 CfgBuilder]: Removed 5 assume(true) statements. [2021-11-21 01:43:19,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:19 BoogieIcfgContainer [2021-11-21 01:43:19,457 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-21 01:43:19,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-21 01:43:19,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-21 01:43:19,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-21 01:43:19,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:43:13" (1/3) ... [2021-11-21 01:43:19,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a18794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:19, skipping insertion in model container [2021-11-21 01:43:19,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:43:16" (2/3) ... [2021-11-21 01:43:19,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22a18794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:43:19, skipping insertion in model container [2021-11-21 01:43:19,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:43:19" (3/3) ... [2021-11-21 01:43:19,471 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_priority_queue_s_sift_up_harness.i [2021-11-21 01:43:19,477 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-21 01:43:19,477 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-21 01:43:19,541 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-21 01:43:19,558 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 [2021-11-21 01:43:19,558 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-21 01:43:19,587 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 131 states have (on average 1.2213740458015268) internal successors, (160), 134 states have internal predecessors, (160), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) [2021-11-21 01:43:19,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-21 01:43:19,604 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:19,605 INFO L514 BasicCegarLoop]: trace histogram [7, 3, 3, 3, 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] [2021-11-21 01:43:19,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:19,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:19,613 INFO L85 PathProgramCache]: Analyzing trace with hash 1797852135, now seen corresponding path program 1 times [2021-11-21 01:43:19,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:19,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628396805] [2021-11-21 01:43:19,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:19,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:20,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-21 01:43:20,360 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:20,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628396805] [2021-11-21 01:43:20,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628396805] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:43:20,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642724826] [2021-11-21 01:43:20,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:20,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:20,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:20,368 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:20,389 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-21 01:43:20,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:20,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 2116 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-21 01:43:20,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:21,236 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:43:21,236 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:21,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642724826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:21,237 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:43:21,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2021-11-21 01:43:21,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534936994] [2021-11-21 01:43:21,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:21,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-21 01:43:21,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:21,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-21 01:43:21,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:43:21,288 INFO L87 Difference]: Start difference. First operand has 252 states, 131 states have (on average 1.2213740458015268) internal successors, (160), 134 states have internal predecessors, (160), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (95), 95 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:43:22,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:22,071 INFO L93 Difference]: Finished difference Result 475 states and 690 transitions. [2021-11-21 01:43:22,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-21 01:43:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 79 [2021-11-21 01:43:22,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:22,094 INFO L225 Difference]: With dead ends: 475 [2021-11-21 01:43:22,094 INFO L226 Difference]: Without dead ends: 251 [2021-11-21 01:43:22,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:43:22,109 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 32 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1123 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:22,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 1123 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:43:22,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2021-11-21 01:43:22,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 251. [2021-11-21 01:43:22,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 131 states have (on average 1.1908396946564885) internal successors, (156), 134 states have internal predecessors, (156), 95 states have call successors, (95), 23 states have call predecessors, (95), 23 states have return successors, (97), 93 states have call predecessors, (97), 93 states have call successors, (97) [2021-11-21 01:43:22,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 348 transitions. [2021-11-21 01:43:22,252 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 348 transitions. Word has length 79 [2021-11-21 01:43:22,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:22,254 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 348 transitions. [2021-11-21 01:43:22,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 5 states have internal predecessors, (30), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-11-21 01:43:22,254 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 348 transitions. [2021-11-21 01:43:22,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-21 01:43:22,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:22,270 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-11-21 01:43:22,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:22,472 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2021-11-21 01:43:22,473 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:22,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:22,473 INFO L85 PathProgramCache]: Analyzing trace with hash -1332383423, now seen corresponding path program 1 times [2021-11-21 01:43:22,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:22,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92319315] [2021-11-21 01:43:22,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:22,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:22,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:22,746 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-21 01:43:22,747 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:22,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92319315] [2021-11-21 01:43:22,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92319315] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:43:22,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129582106] [2021-11-21 01:43:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:22,748 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:22,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:22,750 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:22,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-21 01:43:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:23,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 2166 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:43:23,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:23,500 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:43:23,500 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:23,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2129582106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:23,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-21 01:43:23,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-21 01:43:23,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553579978] [2021-11-21 01:43:23,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:23,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:43:23,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:23,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:43:23,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-21 01:43:23,504 INFO L87 Difference]: Start difference. First operand 251 states and 348 transitions. Second operand has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-21 01:43:24,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:24,122 INFO L93 Difference]: Finished difference Result 485 states and 688 transitions. [2021-11-21 01:43:24,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:43:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 87 [2021-11-21 01:43:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:24,127 INFO L225 Difference]: With dead ends: 485 [2021-11-21 01:43:24,127 INFO L226 Difference]: Without dead ends: 264 [2021-11-21 01:43:24,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:43:24,130 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 47 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1635 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:24,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 1635 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:43:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-21 01:43:24,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 262. [2021-11-21 01:43:24,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-11-21 01:43:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 373 transitions. [2021-11-21 01:43:24,161 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 373 transitions. Word has length 87 [2021-11-21 01:43:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:24,162 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 373 transitions. [2021-11-21 01:43:24,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.142857142857143) internal successors, (36), 7 states have internal predecessors, (36), 4 states have call successors, (17), 2 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-11-21 01:43:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 373 transitions. [2021-11-21 01:43:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-21 01:43:24,165 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:24,165 INFO L514 BasicCegarLoop]: trace histogram [7, 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] [2021-11-21 01:43:24,205 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:24,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-21 01:43:24,378 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:24,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:24,379 INFO L85 PathProgramCache]: Analyzing trace with hash 302782654, now seen corresponding path program 1 times [2021-11-21 01:43:24,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:24,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700168216] [2021-11-21 01:43:24,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:24,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:24,478 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:24,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [535535972] [2021-11-21 01:43:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:24,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:24,479 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:24,480 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:24,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-21 01:43:24,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:24,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 2276 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:43:24,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:25,199 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2021-11-21 01:43:25,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:25,200 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700168216] [2021-11-21 01:43:25,200 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:25,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [535535972] [2021-11-21 01:43:25,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [535535972] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:25,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:25,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-21 01:43:25,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650793311] [2021-11-21 01:43:25,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:25,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-21 01:43:25,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:25,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-21 01:43:25,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-21 01:43:25,203 INFO L87 Difference]: Start difference. First operand 262 states and 373 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-21 01:43:25,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:25,707 INFO L93 Difference]: Finished difference Result 502 states and 725 transitions. [2021-11-21 01:43:25,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:43:25,708 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 96 [2021-11-21 01:43:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:25,712 INFO L225 Difference]: With dead ends: 502 [2021-11-21 01:43:25,713 INFO L226 Difference]: Without dead ends: 270 [2021-11-21 01:43:25,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:43:25,716 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 43 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:25,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1392 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-21 01:43:25,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-11-21 01:43:25,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 262. [2021-11-21 01:43:25,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-11-21 01:43:25,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 373 transitions. [2021-11-21 01:43:25,749 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 373 transitions. Word has length 96 [2021-11-21 01:43:25,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:25,749 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 373 transitions. [2021-11-21 01:43:25,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 4 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-11-21 01:43:25,750 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 373 transitions. [2021-11-21 01:43:25,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-11-21 01:43:25,752 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:25,753 INFO L514 BasicCegarLoop]: trace histogram [7, 3, 3, 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] [2021-11-21 01:43:25,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:25,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:25,979 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:25,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:25,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1922393523, now seen corresponding path program 1 times [2021-11-21 01:43:25,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:25,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238323151] [2021-11-21 01:43:25,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:25,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:26,055 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:26,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1848619598] [2021-11-21 01:43:26,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:26,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:26,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:26,061 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:26,091 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-21 01:43:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:26,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 2330 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:43:26,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:26,873 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-21 01:43:26,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:26,873 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:26,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238323151] [2021-11-21 01:43:26,874 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:26,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848619598] [2021-11-21 01:43:26,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848619598] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:26,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:26,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:43:26,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284894575] [2021-11-21 01:43:26,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:26,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:43:26,876 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:26,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:43:26,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:43:26,877 INFO L87 Difference]: Start difference. First operand 262 states and 373 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-21 01:43:27,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:27,661 INFO L93 Difference]: Finished difference Result 504 states and 726 transitions. [2021-11-21 01:43:27,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:43:27,662 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 104 [2021-11-21 01:43:27,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:27,666 INFO L225 Difference]: With dead ends: 504 [2021-11-21 01:43:27,666 INFO L226 Difference]: Without dead ends: 272 [2021-11-21 01:43:27,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:43:27,669 INFO L933 BasicCegarLoop]: 281 mSDtfsCounter, 66 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1877 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:27,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 1877 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 491 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:43:27,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-21 01:43:27,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2021-11-21 01:43:27,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (110), 96 states have call predecessors, (110), 95 states have call successors, (110) [2021-11-21 01:43:27,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 373 transitions. [2021-11-21 01:43:27,713 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 373 transitions. Word has length 104 [2021-11-21 01:43:27,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:27,713 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 373 transitions. [2021-11-21 01:43:27,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 8 states have internal predecessors, (47), 5 states have call successors, (20), 2 states have call predecessors, (20), 4 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2021-11-21 01:43:27,714 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 373 transitions. [2021-11-21 01:43:27,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-21 01:43:27,717 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:27,717 INFO L514 BasicCegarLoop]: trace histogram [7, 3, 3, 2, 2, 2, 2, 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] [2021-11-21 01:43:27,759 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:27,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:27,943 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:27,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:27,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1441820222, now seen corresponding path program 1 times [2021-11-21 01:43:27,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:27,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865298948] [2021-11-21 01:43:27,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:27,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:28,010 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:28,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [753894699] [2021-11-21 01:43:28,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:28,010 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:28,011 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:28,012 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:28,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-21 01:43:28,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:28,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2440 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-21 01:43:28,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:28,782 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-21 01:43:28,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:28,782 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865298948] [2021-11-21 01:43:28,783 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:28,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753894699] [2021-11-21 01:43:28,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753894699] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:28,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:28,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-21 01:43:28,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076765458] [2021-11-21 01:43:28,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:28,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-21 01:43:28,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:28,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-21 01:43:28,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-21 01:43:28,786 INFO L87 Difference]: Start difference. First operand 262 states and 373 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-21 01:43:29,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:29,417 INFO L93 Difference]: Finished difference Result 471 states and 678 transitions. [2021-11-21 01:43:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-21 01:43:29,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) Word has length 113 [2021-11-21 01:43:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:29,422 INFO L225 Difference]: With dead ends: 471 [2021-11-21 01:43:29,422 INFO L226 Difference]: Without dead ends: 264 [2021-11-21 01:43:29,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:43:29,425 INFO L933 BasicCegarLoop]: 289 mSDtfsCounter, 62 mSDsluCounter, 1520 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 1648 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:29,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 1648 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-21 01:43:29,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2021-11-21 01:43:29,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2021-11-21 01:43:29,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 140 states have (on average 1.1928571428571428) internal successors, (167), 144 states have internal predecessors, (167), 97 states have call successors, (97), 23 states have call predecessors, (97), 25 states have return successors, (112), 96 states have call predecessors, (112), 95 states have call successors, (112) [2021-11-21 01:43:29,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 376 transitions. [2021-11-21 01:43:29,453 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 376 transitions. Word has length 113 [2021-11-21 01:43:29,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:29,454 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 376 transitions. [2021-11-21 01:43:29,454 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 4 states have call successors, (18) [2021-11-21 01:43:29,454 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 376 transitions. [2021-11-21 01:43:29,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2021-11-21 01:43:29,474 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:29,475 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2021-11-21 01:43:29,508 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-21 01:43:29,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:29,695 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:29,696 INFO L85 PathProgramCache]: Analyzing trace with hash 1194197494, now seen corresponding path program 1 times [2021-11-21 01:43:29,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:29,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644101406] [2021-11-21 01:43:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:29,697 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:29,761 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:29,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [796880227] [2021-11-21 01:43:29,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:29,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:29,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:29,763 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:29,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-21 01:43:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:30,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2540 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:43:30,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:30,602 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-21 01:43:30,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:30,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:30,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644101406] [2021-11-21 01:43:30,603 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:30,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [796880227] [2021-11-21 01:43:30,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [796880227] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:30,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:30,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-21 01:43:30,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507278981] [2021-11-21 01:43:30,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:30,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-21 01:43:30,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:30,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-21 01:43:30,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-21 01:43:30,605 INFO L87 Difference]: Start difference. First operand 264 states and 376 transitions. Second operand has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-21 01:43:31,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:31,351 INFO L93 Difference]: Finished difference Result 481 states and 692 transitions. [2021-11-21 01:43:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:43:31,352 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) Word has length 129 [2021-11-21 01:43:31,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:31,355 INFO L225 Difference]: With dead ends: 481 [2021-11-21 01:43:31,355 INFO L226 Difference]: Without dead ends: 272 [2021-11-21 01:43:31,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:43:31,358 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 81 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:31,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 2115 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:43:31,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-21 01:43:31,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 270. [2021-11-21 01:43:31,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 145 states have (on average 1.193103448275862) internal successors, (173), 148 states have internal predecessors, (173), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-11-21 01:43:31,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 384 transitions. [2021-11-21 01:43:31,379 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 384 transitions. Word has length 129 [2021-11-21 01:43:31,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:31,380 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 384 transitions. [2021-11-21 01:43:31,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 5 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (20), 4 states have call predecessors, (20), 5 states have call successors, (20) [2021-11-21 01:43:31,381 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 384 transitions. [2021-11-21 01:43:31,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-21 01:43:31,383 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:31,384 INFO L514 BasicCegarLoop]: trace histogram [7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2021-11-21 01:43:31,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:31,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-11-21 01:43:31,599 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:31,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:31,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2130827858, now seen corresponding path program 1 times [2021-11-21 01:43:31,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:31,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217464516] [2021-11-21 01:43:31,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:31,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:31,695 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:31,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1028865789] [2021-11-21 01:43:31,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:31,696 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:31,697 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:31,711 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-21 01:43:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:32,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-21 01:43:32,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:32,559 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-11-21 01:43:32,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:32,560 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:32,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217464516] [2021-11-21 01:43:32,560 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:32,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1028865789] [2021-11-21 01:43:32,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1028865789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:32,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:32,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-21 01:43:32,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086707677] [2021-11-21 01:43:32,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:32,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-21 01:43:32,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:32,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-21 01:43:32,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-21 01:43:32,562 INFO L87 Difference]: Start difference. First operand 270 states and 384 transitions. Second operand has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-21 01:43:33,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:33,299 INFO L93 Difference]: Finished difference Result 493 states and 708 transitions. [2021-11-21 01:43:33,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-21 01:43:33,299 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) Word has length 147 [2021-11-21 01:43:33,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:33,303 INFO L225 Difference]: With dead ends: 493 [2021-11-21 01:43:33,303 INFO L226 Difference]: Without dead ends: 278 [2021-11-21 01:43:33,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-11-21 01:43:33,305 INFO L933 BasicCegarLoop]: 288 mSDtfsCounter, 73 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 1914 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:33,306 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 1914 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 386 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-21 01:43:33,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-21 01:43:33,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 270. [2021-11-21 01:43:33,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 145 states have (on average 1.193103448275862) internal successors, (173), 148 states have internal predecessors, (173), 98 states have call successors, (98), 23 states have call predecessors, (98), 25 states have return successors, (113), 98 states have call predecessors, (113), 96 states have call successors, (113) [2021-11-21 01:43:33,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 384 transitions. [2021-11-21 01:43:33,324 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 384 transitions. Word has length 147 [2021-11-21 01:43:33,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:33,325 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 384 transitions. [2021-11-21 01:43:33,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (24), 3 states have call predecessors, (24), 3 states have return successors, (22), 4 states have call predecessors, (22), 5 states have call successors, (22) [2021-11-21 01:43:33,325 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 384 transitions. [2021-11-21 01:43:33,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-11-21 01:43:33,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:33,328 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:43:33,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:33,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-21 01:43:33,542 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:33,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:33,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1998139826, now seen corresponding path program 1 times [2021-11-21 01:43:33,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:33,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289206953] [2021-11-21 01:43:33,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:33,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:33,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:33,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1496431520] [2021-11-21 01:43:33,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:33,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:33,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:33,661 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:33,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-21 01:43:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:34,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 2868 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-21 01:43:34,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-11-21 01:43:34,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:34,631 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:34,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289206953] [2021-11-21 01:43:34,631 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:34,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1496431520] [2021-11-21 01:43:34,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1496431520] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:34,632 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:34,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:43:34,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593665608] [2021-11-21 01:43:34,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:34,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:43:34,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:34,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:43:34,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:43:34,635 INFO L87 Difference]: Start difference. First operand 270 states and 384 transitions. Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-11-21 01:43:35,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:35,559 INFO L93 Difference]: Finished difference Result 487 states and 698 transitions. [2021-11-21 01:43:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-21 01:43:35,560 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) Word has length 163 [2021-11-21 01:43:35,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:35,563 INFO L225 Difference]: With dead ends: 487 [2021-11-21 01:43:35,563 INFO L226 Difference]: Without dead ends: 272 [2021-11-21 01:43:35,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-11-21 01:43:35,565 INFO L933 BasicCegarLoop]: 277 mSDtfsCounter, 96 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 2369 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:35,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 2369 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-21 01:43:35,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-11-21 01:43:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 262. [2021-11-21 01:43:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 139 states have (on average 1.1942446043165467) internal successors, (166), 142 states have internal predecessors, (166), 97 states have call successors, (97), 23 states have call predecessors, (97), 24 states have return successors, (108), 96 states have call predecessors, (108), 95 states have call successors, (108) [2021-11-21 01:43:35,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 371 transitions. [2021-11-21 01:43:35,583 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 371 transitions. Word has length 163 [2021-11-21 01:43:35,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:35,584 INFO L470 AbstractCegarLoop]: Abstraction has 262 states and 371 transitions. [2021-11-21 01:43:35,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 9 states have internal predecessors, (71), 6 states have call successors, (26), 3 states have call predecessors, (26), 4 states have return successors, (24), 5 states have call predecessors, (24), 6 states have call successors, (24) [2021-11-21 01:43:35,584 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 371 transitions. [2021-11-21 01:43:35,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-11-21 01:43:35,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:35,587 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:43:35,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:35,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:35,811 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:35,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:35,812 INFO L85 PathProgramCache]: Analyzing trace with hash 253620856, now seen corresponding path program 1 times [2021-11-21 01:43:35,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:35,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095692201] [2021-11-21 01:43:35,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:35,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:35,879 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:35,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [710432030] [2021-11-21 01:43:35,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:35,880 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:35,880 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:35,881 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:35,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-21 01:43:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:36,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 3088 conjuncts, 59 conjunts are in the unsatisfiable core [2021-11-21 01:43:36,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:37,335 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 32 treesize of output 24 [2021-11-21 01:43:37,338 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 21 treesize of output 13 [2021-11-21 01:43:37,531 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 160 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-21 01:43:37,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-21 01:43:37,531 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:43:37,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095692201] [2021-11-21 01:43:37,532 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:43:37,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [710432030] [2021-11-21 01:43:37,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [710432030] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-21 01:43:37,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-21 01:43:37,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-21 01:43:37,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866236936] [2021-11-21 01:43:37,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-21 01:43:37,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-21 01:43:37,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-21 01:43:37,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-21 01:43:37,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-21 01:43:37,538 INFO L87 Difference]: Start difference. First operand 262 states and 371 transitions. Second operand has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-11-21 01:43:38,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-21 01:43:38,277 INFO L93 Difference]: Finished difference Result 504 states and 723 transitions. [2021-11-21 01:43:38,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-21 01:43:38,278 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 181 [2021-11-21 01:43:38,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-21 01:43:38,280 INFO L225 Difference]: With dead ends: 504 [2021-11-21 01:43:38,280 INFO L226 Difference]: Without dead ends: 294 [2021-11-21 01:43:38,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 169 SyntacticMatches, 3 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2021-11-21 01:43:38,282 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 87 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 386 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-21 01:43:38,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 1957 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 386 Invalid, 0 Unknown, 90 Unchecked, 0.6s Time] [2021-11-21 01:43:38,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2021-11-21 01:43:38,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 273. [2021-11-21 01:43:38,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 273 states, 146 states have (on average 1.1849315068493151) internal successors, (173), 149 states have internal predecessors, (173), 99 states have call successors, (99), 24 states have call predecessors, (99), 26 states have return successors, (116), 99 states have call predecessors, (116), 97 states have call successors, (116) [2021-11-21 01:43:38,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 273 states to 273 states and 388 transitions. [2021-11-21 01:43:38,302 INFO L78 Accepts]: Start accepts. Automaton has 273 states and 388 transitions. Word has length 181 [2021-11-21 01:43:38,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-21 01:43:38,303 INFO L470 AbstractCegarLoop]: Abstraction has 273 states and 388 transitions. [2021-11-21 01:43:38,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.9) internal successors, (59), 10 states have internal predecessors, (59), 6 states have call successors, (24), 3 states have call predecessors, (24), 4 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2021-11-21 01:43:38,303 INFO L276 IsEmpty]: Start isEmpty. Operand 273 states and 388 transitions. [2021-11-21 01:43:38,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-11-21 01:43:38,306 INFO L506 BasicCegarLoop]: Found error trace [2021-11-21 01:43:38,306 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-11-21 01:43:38,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-21 01:43:38,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:38,531 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [my_abortErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-21 01:43:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-21 01:43:38,532 INFO L85 PathProgramCache]: Analyzing trace with hash 561612999, now seen corresponding path program 1 times [2021-11-21 01:43:38,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-21 01:43:38,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515398684] [2021-11-21 01:43:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:38,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-21 01:43:38,601 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-21 01:43:38,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945192430] [2021-11-21 01:43:38,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-21 01:43:38,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-21 01:43:38,602 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 [2021-11-21 01:43:38,603 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-21 01:43:38,621 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b09c231f-0345-4084-ac08-3509164f2e47/bin/utaipan-TEXQjIfE4P/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-21 01:43:39,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-21 01:43:39,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 3090 conjuncts, 171 conjunts are in the unsatisfiable core [2021-11-21 01:43:39,444 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-21 01:43:39,453 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:43:39,994 INFO L354 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2021-11-21 01:43:39,994 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:43:40,560 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:43:40,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:43:40,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:43:40,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:43:40,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:43:40,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 15 [2021-11-21 01:43:42,809 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:43:42,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:43:42,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:43:42,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:43:42,835 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:43:42,836 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2021-11-21 01:43:44,481 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:43:44,481 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 43 treesize of output 35 [2021-11-21 01:43:44,489 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:43:44,489 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2021-11-21 01:43:46,770 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset| (select (select |c_#memory_$Pointer$.base| |c_aws_mul_size_checked_#in~r#1.base|) |aws_mul_size_checked_aws_mul_u64_checked_~r#1.offset|))) |c_#memory_$Pointer$.base|))) is different from true [2021-11-21 01:43:57,453 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|)))) (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset|))) |c_#memory_$Pointer$.base|) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) |c_aws_mul_size_checked_#in~r#1.offset| (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-21 01:43:59,491 WARN L860 $PredicateComparison]: unable to prove that (exists ((|aws_mul_size_checked_aws_mul_u64_checked_~b#1| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| Int) (|aws_mul_size_checked_aws_mul_u64_checked_~a#1| Int)) (and (= (store |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.base)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.base| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0))) |c_#memory_$Pointer$.base|) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_$Pointer$.offset)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (select (select |c_#memory_$Pointer$.offset| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0)))) (= |c_#memory_int| (store |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base| (store (select |c_old(#memory_int)| |aws_mul_size_checked_aws_mul_u64_checked_~r#1.base|) 0 (* |aws_mul_size_checked_aws_mul_u64_checked_~b#1| |aws_mul_size_checked_aws_mul_u64_checked_~a#1|)))))) is different from true [2021-11-21 01:44:10,324 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:10,401 INFO L354 Elim1Store]: treesize reduction 50, result has 35.1 percent of original size [2021-11-21 01:44:10,401 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 149 treesize of output 145 [2021-11-21 01:44:10,433 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:10,513 INFO L354 Elim1Store]: treesize reduction 92, result has 28.1 percent of original size [2021-11-21 01:44:10,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 142 treesize of output 136 [2021-11-21 01:44:10,550 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-11-21 01:44:10,550 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 130 [2021-11-21 01:44:10,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:10,644 INFO L354 Elim1Store]: treesize reduction 92, result has 28.1 percent of original size [2021-11-21 01:44:10,645 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 124 treesize of output 118 [2021-11-21 01:44:36,918 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:44:36,937 INFO L354 Elim1Store]: treesize reduction 15, result has 44.4 percent of original size [2021-11-21 01:44:36,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 69 treesize of output 61 [2021-11-21 01:44:43,435 INFO L134 CoverageAnalysis]: Checked inductivity of 285 backedges. 154 proven. 29 refuted. 0 times theorem prover too weak. 97 trivial. 5 not checked. [2021-11-21 01:44:43,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-21 01:44:54,468 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 20 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-21 01:44:57,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-21 01:44:57,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515398684] [2021-11-21 01:44:57,938 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-11-21 01:44:57,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945192430] [2021-11-21 01:44:57,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945192430] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-21 01:44:57,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2127030768] [2021-11-21 01:44:57,964 INFO L159 IcfgInterpreter]: Started Sifa with 71 locations of interest [2021-11-21 01:44:57,964 INFO L166 IcfgInterpreter]: Building call graph [2021-11-21 01:44:57,969 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-21 01:44:57,974 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-21 01:44:57,974 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-21 01:45:02,793 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:45:03,113 INFO L244 Elim1Store]: Index analysis took 440 ms [2021-11-21 01:45:20,814 WARN L227 SmtUtils]: Spent 17.64s on a formula simplification. DAG size of input: 1767 DAG size of output: 1175 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:45:20,819 INFO L354 Elim1Store]: treesize reduction 1968, result has 47.2 percent of original size [2021-11-21 01:45:20,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 197 select indices, 197 select index equivalence classes, 19308 disjoint index pairs (out of 19306 index pairs), introduced 197 new quantified variables, introduced 196 case distinctions, treesize of input 992 treesize of output 2358 [2021-11-21 01:45:41,256 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:45:41,889 INFO L244 Elim1Store]: Index analysis took 872 ms [2021-11-21 01:46:18,262 WARN L227 SmtUtils]: Spent 36.29s on a formula simplification. DAG size of input: 2161 DAG size of output: 1179 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-21 01:46:18,266 INFO L354 Elim1Store]: treesize reduction 3528, result has 33.3 percent of original size [2021-11-21 01:46:18,270 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 199 select indices, 199 select index equivalence classes, 19505 disjoint index pairs (out of 19701 index pairs), introduced 199 new quantified variables, introduced 392 case distinctions, treesize of input 1002 treesize of output 2377 [2021-11-21 01:46:55,202 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-21 01:46:55,358 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-21 01:46:56,137 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-21 01:47:01,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:01,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:47:01,524 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 15 treesize of output 1 [2021-11-21 01:47:01,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:01,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2021-11-21 01:47:01,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:01,552 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:01,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:01,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 01:47:03,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:03,515 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:47:03,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:03,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:47:03,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:03,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:47:04,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:04,437 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:47:04,743 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:04,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:47:04,785 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:04,786 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-11-21 01:47:05,036 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 15 treesize of output 1 [2021-11-21 01:47:05,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,094 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,096 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-21 01:47:05,331 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,332 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,333 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,334 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-21 01:47:05,388 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,389 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:05,391 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2021-11-21 01:47:05,816 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-21 01:47:05,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-21 01:47:05,992 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 22 [2021-11-21 01:47:05,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2021-11-21 01:47:06,127 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-21 01:47:06,143 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 15 treesize of output 1 [2021-11-21 01:47:06,153 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 15 treesize of output 1 [2021-11-21 01:47:06,167 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 15 treesize of output 1 [2021-11-21 01:47:06,321 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:47:06,330 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:06,352 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:06,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:47:06,389 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:47:06,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:47:06,565 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-21 01:47:06,565 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 38 [2021-11-21 01:47:06,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:47:06,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-21 01:47:07,732 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 49 [2021-11-21 01:47:12,834 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 8 treesize of output 4 [2021-11-21 01:47:12,838 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:47:12,844 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 7 treesize of output 3 [2021-11-21 01:47:12,849 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 7 treesize of output 3 [2021-11-21 01:47:16,044 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 8 treesize of output 4 [2021-11-21 01:47:16,048 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-21 01:47:16,056 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 7 treesize of output 3 [2021-11-21 01:47:16,063 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 7 treesize of output 3 [2021-11-21 01:47:24,562 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-21 01:47:24,940 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-21 01:49:37,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,706 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:49:37,735 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:49:37,872 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:37,872 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:49:44,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:44,554 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:44,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:44,556 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:49:44,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:44,696 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:44,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:44,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-11-21 01:49:44,825 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-21 01:49:44,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2021-11-21 01:49:53,283 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-21 01:49:53,562 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 194 [2021-11-21 01:49:53,637 INFO L197 IcfgInterpreter]: Interpreting procedure aws_array_list_is_bounded with input of size 81 for LOIs [2021-11-21 01:49:54,931 INFO L197 IcfgInterpreter]: Interpreting procedure ensure_array_list_has_allocated_data_member with input of size 116 for LOIs [2021-11-21 01:50:37,234 INFO L197 IcfgInterpreter]: Interpreting procedure can_fail_allocator with input of size 116 for LOIs [2021-11-21 01:50:39,229 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 126 for LOIs [2021-11-21 01:50:39,504 INFO L197 IcfgInterpreter]: Interpreting procedure aws_priority_queue_is_valid with input of size 119 for LOIs [2021-11-21 01:52:57,843 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-21 01:52:57,998 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7200 conjuctions. This might take some time... [2021-11-21 01:53:17,933 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7200 conjuctions. [2021-11-21 01:53:18,190 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 7 [2021-11-21 01:53:18,314 WARN L176 XnfTransformerHelper]: Simplifying disjunction of 7200 conjuctions. This might take some time... [2021-11-21 01:53:37,213 INFO L192 XnfTransformerHelper]: Simplified to disjunction of 7200 conjuctions.